The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and offering a wide range of dental certified courses in different formats. Indian dental academy provides dental crown & Bridge,rotary endodontics,fixed orthodontics, Dental implants courses.for details pls visit www.indiandentalacademy.com ,or call 0091-9248678078

1. IMPRESSION IN
ORTHODONTICS
www.indiandentalacademy.com
INDIAN DENTAL ACADEMY
Leader in continuing dental education
www.indiandentalacademy.com

2. Impressions are negative replicas
Impressions should fully extend so that not
only the crown position & Inclination but also
the contour of the supporting alveolar bone
can be seen clearly.
www.indiandentalacademy.com

3. Tray selected should include all erupted
molars
3mm clearance between teeth & tray
Impression material used- Alginate(common),
Rubber based impression material
Patient is seated upright & mandibular
impression made 1st preferably
www.indiandentalacademy.com

4. Impression for functional appliance differs by 2
important ways
Areas where appliance components will contact soft tissues
must be clearly delineated. Most appliances use contact with
lingual mucosa to stimulate forward posturing, so usually this
is the critical area. The impression must include the alveolar
process bellow the lower molars if long lingual flanges are to
be employed.
The impression must not stretch & excessively display soft
tissue in an area of contact with the appliance. This is critical
when lip pads & buccal shields are planned. Too much
extension of the impression will result in pads & shields that
are too long & will cause soft tissue irritation & ulceration
when the appliance is worn.
www.indiandentalacademy.com

5. Impression trays
High flange orthodontic trays
www.indiandentalacademy.com

6. Chair Side Custom Impression Tray
Non-gothic arch
www.indiandentalacademy.com

7. Teeth covered with base plate wax
www.indiandentalacademy.com

8. Putty molded over wax
www.indiandentalacademy.com

9. Wire reinforcing the frame & handle
www.indiandentalacademy.com

10. Low viscosity material used for detailed
impression
www.indiandentalacademy.com

11. Impression making in minimum mouth
opening
Lingual flange is cut
www.indiandentalacademy.com

12. Sharp edges smoothened by acrylic and
polished
www.indiandentalacademy.com

13. Lower impression complete
www.indiandentalacademy.com

14. Disinfecting the impression
Rinse well with cold tap water
Spray 2.2% glutaraldehyde
Place in air tight bag for 10 minutes
Remove & rinse again
Pour immediately
www.indiandentalacademy.com

15. THANK UFor more details please visit
www.indiandentalacademy.com
www.indiandentalacademy.com